Error motion analysis and design of a synthetic probe of thread functional diameter based on the compliant mechanism

Qiu, Zurong; Wang, Chenglin; Su, Zhikun; Xue, Jie; Li, Xinghua; Li, Haopeng

doi:10.1088/1361-6501/aae915

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…However, our method is not to measure the contour of the tooth directly, but to measure the effect of the thread profile on the standard profile of the whole circumference, which is more representative of the functional diameter given in Calibration Guide EURAMET/cg-10/v.2.1 [4,38,39]. The measuring tip is advanced in measurement principle, but still has the potential for improvement in measurement accuracy.…”

Section: Discussionmentioning

confidence: 99%

A novel measuring tip for thread functional diameter: error compensation of the effect of lead angle and curvature radius

Qiu¹,

Wang²,

Su³

et al. 2018

Meas. Sci. Technol.

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To obtain a method for measuring thread functional diameter, a new probe based on the synthetic measurement principle is designed to quantify the practical effect of each parameter in all axial sections. The probing element is an axial slice of a standard thread with a certain thickness; hence, the slice has a determined lead angle and curvature radius. When threads with different diameters are measured by slices, the maximum error caused by the lead angle and curvature radius can approach 99 μm according to the simulation results. To solve this problem, a measurement error model is established by analyzing the relationship between the contact points of the measuring tip and thread. By simulations and experiments, our results show that most of the effect of lead angle and curvature radius can be compensated. Using six slices with different pitches, a precise detection of 192 kinds of threads is achieved after error compensation within the range of M65–M300.

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Section: Discussionmentioning

confidence: 99%

A novel measuring tip for thread functional diameter: error compensation of the effect of lead angle and curvature radius

Qiu¹,

Wang²,

Su³

et al. 2018

Meas. Sci. Technol.

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show abstract

“…Their performance affects the connection effect of the structure. Compared with the current mainstream thread-measuring equipment, three-dimensional (3D) threadmeasuring machines can accurately measure the main parameters of the thread in 3D space [1][2][3][4][5]. As the main measuring system of 3D thread-measuring machines, the probe can greatly affect their accuracy.…”

Section: Introductionmentioning

confidence: 99%

Coupling error model for the contact probe of a three-dimensional screw thread-measuring machine

Yu¹,

Yang²,

Cai³

et al. 2022

Meas. Sci. Technol.

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Coupling error is an important factor that affects the measurement accuracy of the contact scanning probe of a three-dimensional thread-measuring machine. To address this issue, this paper proposes a coupling error model for contact scanning probes. First, the mechanical structure of the contact scanning probe was introduced, and the main source of its coupling error was analyzed. Second, material mechanics was used to conduct a geometry–force analysis on the guiding mechanism of the probe, thereby establishing a coupling error model. Finally, the experiments were carried out to verify the accuracy of the coupling error model. From the experimental verification, the movement of the measuring head by 10 μm increased the deviation of the probe displacement by 2 μm, indicating the probe deflection. Moreover, the calculated probe deflection angle was consistent with the theoretical value, validating the proposed coupling error model. This method provides an important theoretical basis for the decoupling of measuring probe, thereby improving the accuracy of the probe guiding mechanism.

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“…In 2017, Wakayama et al proposed a 3D optical measurement method based on machine vision, which was used to measure the 3D contours of complex and tiny inner surfaces, such as internally threaded holes [9]. In 2018, Qiu et al [10,11] proposed a design method of a measurement probe based on compliant mechanism theory and, in 2019, designed a new probe based on a comprehensive measurement principle.…”

Section: Introductionmentioning

confidence: 99%

Design and characteristic research of contact probe for high-precision 3D thread-measuring machine

Lin

Yao

et al. 2021

Int J Adv Manuf Technol

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A probe is an important part of high-precision thread-measuring machines. Probe design affects the ability of the machine to achieve precision. The development of three-dimensional (3D) thread-measuring machines has mandated strict requirements for matching measuring heads. A contact scanning probe offers the advantages of a relatively high measurement accuracy and stable performance. In this study, the structure of the scanning probe was designed. First, a micro-force probe model was established according to 3D thread characteristics. The "T"-shaped, ballpoint-pen-shaped needle was selected according to the characteristics of the detection hole and thread. Thereafter, the dimension parameters of the measuring ball, measuring bar, parallel spring plates, and other components were designed to enable the measuring head to meet the precision requirements. The flexural deformation of the measuring rod was analyzed to determine the appropriate length and diameter of the measuring rod. Finally, the effective static and dynamic characteristics of the head were demonstrated through finite element simulation and experimental measurements. In addition, the static characteristics of the probe were measured. The return error was 0.29 µm, and the repeatability error was 0.24 µm. The dynamic characteristics were tested using the percussion method, and the natural frequency was 180 Hz. These results help ensure the precision of the probe and improve the measuring precision of the machine. KeywordsContact scanning probe • Micro-force probe model • Structural optimization • Static and dynamic characteristics * Jing Yu

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Error motion analysis and design of a synthetic probe of thread functional diameter based on the compliant mechanism

Cited by 3 publications

References 19 publications

A novel measuring tip for thread functional diameter: error compensation of the effect of lead angle and curvature radius

A novel measuring tip for thread functional diameter: error compensation of the effect of lead angle and curvature radius

Coupling error model for the contact probe of a three-dimensional screw thread-measuring machine

Design and characteristic research of contact probe for high-precision 3D thread-measuring machine

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